A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Star CN with DSLR Camera
From: Wolfgang Hasper
Date: 2016 Jan 28, 17:34 +0100
As re the digital CN options:
Has anyone ever considered something like this
creates all-around image that could be processed to recognize the sea horizon as well as a large number of celestial bodies.
And the total number of pixels is large. Calibration shots at known locations from time to time.
And without IR filters the sensors should work well for stars at night.
Just a thought...
Gesendet: Donnerstag, 28. Januar 2016 um 17:19 Uhr
Von: "Greg Rudzinski" <NoReply_Rudzinski@fer3.com>
Betreff: [NavList] Re: Star CN with DSLR Camera
If you would like to work through the example image then here are the givens:
Time 00:41:47 UT 8/24/2015
Camera image time 16:41:47 8/23/2015 ZD +8 PST (not summer PDT)
A.P. Lat. 34° 10' N Lon. 119° 14' W
Pixel count 2401 (by Windows Paint)
.56(2401 px)=1344.6'=22° 24.6'° (see calibration card attached, .56 is 35mm lens calibration multiplier)
Pixel corr. - 2.5' (see calibration card attached at 2401 px)
Hs = 22° 22.1'
Height of Eye 7ft. -2.6'
Ho = 22° 17.2'
Hc = 22° 18.9'
intercept 1.7' away
(f1-35mm-Super-Takumar-Cheat-Card.jpg: Open and save
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